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    Battery component inspection based on optical and thermal imaging
    1.
    发明授权
    Battery component inspection based on optical and thermal imaging 有权

    公开(公告)号：US12182990B2

    公开(公告)日：2024-12-31

    申请号：US17743862

    申请日：2022-05-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wei Zeng ,  Scott E. Parrish ,  Jing Gao ,  Brian J. Koch ,  Xingcheng Xiao

    IPC: G06T7/00 ,  G06T7/32 ,  G06T7/33 ,  G06V10/58 ,  H01M10/42

    Abstract: A system for inspecting a battery component includes a heating device configured to heat a surface of the battery component to a selected temperature, an optical-visible imaging device configured to take an optical image of the surface, a thermal imaging device configured to take a thermal image of the surface, and a processor configured to acquire the optical image and the thermal image. The processor is configured to correlate the thermal image with the optical image, identify a feature of interest in at least one of the optical image and the thermal image, determine a geometric characteristic and a temperature characteristic associated with the feature of interest, and determine whether the feature of interest is a defect based on the geometric characteristic and the temperature characteristic.

    Camera vision systems
    3.
    发明授权
    Camera vision systems 有权

    公开(公告)号：US10965856B1

    公开(公告)日：2021-03-30

    申请号：US16711760

    申请日：2019-12-12

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wei Zeng ,  Shuqing Zeng ,  Scott E. Parrish

    IPC: H04N5/225 ,  G03B29/00 ,  B60R11/04

    Abstract: In various embodiments, cameras and mobile platforms are provided. In one exemplary embodiment, a mobile platform is provided that includes a body and a camera disposed on the body. The camera includes one or more image sensors, and one or more lens assemblies. The one or more lens assemblies are configured with respect to the one or more image sensors, that at least one image plane from the one or more image sensors is tilted to form a non-zero angle with at least one equivalent lens plane from the one or more lens assemblies, transferring the image focal plane to be parallel to the movement direction of the mobile platform in which the camera is installed. The use of multiple image sensors or lens assemblies in certain embodiments increases camera angle of view.

    Method for reducing performance variation of an electromagnetically-activated actuator
    4.
    发明授权
    Method for reducing performance variation of an electromagnetically-activated actuator 有权
    降低电磁致动器性能变化的方法

    公开(公告)号：US09435281B2

    公开(公告)日：2016-09-06

    申请号：US14675925

    申请日：2015-04-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Scott E. Parrish ,  Ronald J. Zink

    IPC: F02D41/20 ,  F02D41/22 ,  F02D41/40 ,  F02D19/06 ,  F02D41/38

    CPC classification number: F02D41/20 ,  F02D19/0623 ,  F02D41/22 ,  F02D41/221 ,  F02D41/222 ,  F02D41/402 ,  F02D2041/202 ,  F02D2041/2051 ,  F02D2041/2055 ,  F02D2041/2072 ,  F02D2041/389

    Abstract: A method for reducing performance variation of an electromagnetically-activated actuator having an electrical coil and an armature includes providing actuator activation signals to the electromagnetically-activated actuator. The signals include current driven through the electrical coil in a first direction. The method detects unacceptable response variations in the armature to equivalent actuator activation signals. And, subsequent to detection of unacceptable response variations in the armature, current is driven through the electrical coil in a direction opposite that of the first direction following actuator activation signals.

    Abstract translation: 一种用于减小具有电线圈和电枢的电磁致动致动器的性能变化的方法包括向电磁激励致动器提供致动器启动信号。 信号包括在第一方向上通过电线圈驱动的电流。 该方法检测到电枢中不可接受的响应变化与等效的致动器激活信号。 并且，在检测到电枢中不可接受的响应变化之后，随着致动器激活信号，电流沿着与第一方向相反的方向通过电线圈驱动。

    REGULATING AIR FLOW TO IMPROVE LASER WELD QUALITY
    5.
    发明公开
    REGULATING AIR FLOW TO IMPROVE LASER WELD QUALITY 审中-公开

    公开(公告)号：US20240075553A1

    公开(公告)日：2024-03-07

    申请号：US17901158

    申请日：2022-09-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wei Zeng ,  Scott E. Parrish ,  Baixuan Yang ,  Hui-ping Wang ,  Scott A. Hooker ,  Blair E. Carlson

    IPC: B23K26/14 ,  B23K26/03

    CPC classification number: B23K26/14 ,  B23K26/032

    Abstract: Aspects of the disclosure include air flow systems configured to regulate air flow when laser welding to improve laser weld quality. An exemplary air flow system can include a primary inlet coupled to an air source and one or more secondary inlets coupled to the primary inlet. At least one of the one or more secondary inlets can include an internal valve. Each internal valve is actuatable between a fully open state, a fully closed state, and an intermediate state. The air flow system can further include an outlet coupled to each of the one or more secondary inlets downstream of the internal valve and a controller configured to adjust a position of each internal valve. The controller is configured to adjust the position of each internal valve based on an air flow mapping to increase an average air flow velocity along a laser beam of a welding laser.

    METHOD AND SYSTEM FOR WELD DEFECT DETECTION
    8.
    发明公开
    METHOD AND SYSTEM FOR WELD DEFECT DETECTION 审中-公开

    公开(公告)号：US20230166361A1

    公开(公告)日：2023-06-01

    申请号：US17456992

    申请日：2021-11-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Baixuan Yang ,  Wei Zeng ,  Hui-ping Wang ,  Joshua Lee Solomon ,  Scott E. Parrish

    IPC: B23K31/12 ,  B23K26/03

    CPC classification number: B23K31/125 ,  B23K26/034 ,  B23K2101/006

    Abstract: Methods and systems for detecting weld defects, and methods for manufacturing vehicles using such methods or systems, are provided. An exemplary method includes receiving an input indicating a weld material and material thickness by a portable computing device and determining, with the portable computing device, a detection protocol for the weld material and material thickness. Further, the method includes communicating the detection protocol from the portable computing device to a portable heating source and to a portable thermographic sensor, heating a weld with the portable heating source according to the detection protocol, and recording thermographic data from the weld with the portable thermographic sensor according to the detection protocol. Also, the method includes communicating the thermographic data from the portable thermographic sensor to the portable computing device, and analyzing the thermographic data to detect whether the weld includes a defect and/or determine type, dimension and location of the defect.

    Systems and methods for controlling fluid injections
    10.
    发明授权
    Systems and methods for controlling fluid injections 有权

    公开(公告)号：US10082098B2

    公开(公告)日：2018-09-25

    申请号：US15299795

    申请日：2016-10-21

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Scott E. Parrish ,  Yiran Hu

    IPC: F02B3/00 ,  F02D41/40 ,  F02M51/06

    CPC classification number: F02D41/402 ,  F02D41/401 ,  F02M51/061 ,  Y02T10/44

    Abstract: A vehicle includes a combustion engine having at least one cylinder to burn a fuel, and a fuel injector to supply a fuel mass to the at least one cylinder. The vehicle also includes a controller programmed to cause the fuel injector supply a series of fuel pulses that sum to an aggregate target fuel mass. The controller is also programmed to adjust a commanded duration of a subsequent pulse of the series of pulses from a target pulse duration value based on at least one of a dwell time since a preceding pulse, a fuel mass of the preceding pulse, and an opening delay of the preceding pulse.

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